Well, that's not surprising. In its own way, the fact it was short, achieved numerous convictions and remained non-partisan is a great credit to Mueller. There are a bunch of investigations spawned by this and other malfeasance by Trump. The Mueller investigation has spawned IIRC 6 specific investigations by other state and federal bodies.I'm still bewildered by the M. Report.
In the long term it may even be a benefit, as if collusion was alleged (rather than heavily implied but unproven as I suspect the full report will say), since it means the Democrats are off the hook for trying to impeach Trump, which risked their ability to project their own message for 2020.